本文用FPGA芯片通过编程实现DDS模块功能，进而实现了相移合成信号源的设计。
In this thesis, the function of DDS module was realized with FPGA through programming and then the design of the signal source was realized.
本文第四章列出了相移工作模式和启动以及启动切换、保护功能的具体实验结果。
In the fourth chapter, the experiment results and waveforms of specific points are given.
输出时钟信号还具有可编程的相移和占空比调节等高级时钟变化功能。
The output clock signal has advanced clock shift ability such that the phase shift and duty cycle are programmable.
本文还提出了一种延时分割方法以提高用于实现相移和占空比调节功能的后端分频器的速度。
A new delay partition method is also adopted to improve the speed of the post-scale counter, which is used to realize the programmable phase shift and duty cycle.
本文还提出了一种延时分割方法以提高用于实现相移和占空比调节功能的后端分频器的速度。
A new delay partition method is also adopted to improve the speed of the post-scale counter, which is used to realize the programmable phase shift and duty cycle.
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